Variables in Php

The variable's identity is $(sing) (Variables की पहचान $(sing) है)

But how do we use it by writing(लेकिन हम इसे लिखकर कैसे इस्तेमाल करते हैं)

=>$name(characters)

=>$Name

=>$name123(characters and numeric)

=>$name_name(characters and underscores)

=>$name_78name(characters underscores and numeric)

=>$_variableName

=>$_9name

Don't use like this(इस प्रकार से  उपयोग नहीं करते हैं)

=>$9name

=>$_@name

=>$@name

Variable is case-sensitive

Like => $Name and $name are written then both are different(जैसे => $Name और $name लिखा है तो दोनों अलग हैं)


Ex=>

<?php

$a=5;

$b=10;

$c=$a+$b;

echo "total:".$c;

?>